We have added a Gift Upgrades feature that allows you to gift an account upgrade to another member, just in time for the holiday season. You can see the gift option when going to the Account Upgrades screen, or on any user profile screen.

It will allow you to go outside of normal settings to facilitate mods that increase number of civilizations, city states, beliefs etc.

It will also allow you to unlock map sizes greater than defaults. They might or might not work, depending on how high you set it up.

Once in game you can find your new map size in selection screen.
When new game starts.

Other fun small custom maps:

Map Scripts section allows to add custom map scripts to the game.

Adding map scripts with Civ6_Map_Utility is easy.

Select path to the script you want to add.
Set new name for that script.
Set description for that script.
In "Script functionality and default values", depending on what functionality the script is using select wanted values and default selection.
Those correspond to the game options like seen here.

To remove single map script go to the same directory and remove files:

SCRIPT_NAME.lua,

SCRIPT_NAME_MapSettings.xml

SCRIPT_NAME_StandardMaps.xml

Troubleshooting:

Settings Problems:
Minimum, Maximum and Default values are described within TOOLTIPS- they can be read by hovering mouse over text.
Experimental settings need to be tested by community and can be enhanced with use of other mods.
If your game crashes, try different settings. I am unable to test all of them.

I ask you guys to help figure out what works and what does not.

Example:
1. My game crashes to desktop for maps that are 170x170, however this might not be the case for everyone. Map size of 165 x 170 loaded for me just fine so it might be memory allocation limit or something else. (It does take long time to load on bigger maps - Recommend to disable barbarians on big maps.)

2. Map sizes are not the same as map scripts - map scripts determine spawning of the world and as such, there is no guarantee that the map size selected will work well with your script map and player number.
You might load the game and see no players or starting position as game was unable to find a suitable place for you to spawn. Reloading the map/script usually works, however this again I cannot predict.

Support:
If you are able to provide additional information regarding values and ranges.
If you have an idea how to improve the application - visually or functionally.
Please share it with myself and other community members within Utility's Discussion page.

Changelog from 2016-11-20:
1.Default settings for 'Huge' Map' have been set as 'default' values when loading the application.
2.Minimum and maximum values set to facilitate more sensible map size creation.
3.Minimum, Maximum and Default values are now limited by each other.
4."Experimental settings" checkbox added to ignore sensible map settings.
5."Reset Fields" button added to restore defaults from first load.
6.Tooltips updated with more relevant information.
7.Game path field set to read only to disable invalid path input.
8.Miscellaneous Layout and Label Changes.
9.Better Icon created and added to the executable file.

Changelog 2 from 2016-11-20:
1.Rebuild the Civ6_Map_Utility.exe as for some reason previous version is getting flagged for malicious code. No real changes made, but this .exe seems to work fine.

Changelog from 2016-11-21:
1. Minor cosmetic layout changes to accommodate new functionality.
2. Default game sizes were added in form of presets.
3. Significant progress was made to the Map Scripts Section, however it stays hidden until fully functional.

Recent Reviews

THANK YOU SO MUCH! This is exactly what we need for a dynamic duel with a friend. Will be much more pleasant to play some intense games on the map about the size of one continent in two when standard dueling size than half the night/day to be picked for one and quite possibly boring game. I'll try now to use it together with any mod at least partially removes polar ice and if it will - it will be just a fairy tale on the plains of tiny Pangaea =)

It be nice to include in this tool a way to select if you desire to have land masses for each civ of its own. 10 civs to play against 10 land masses. This is for those who enjoy building an empire before meeting other civs.

To address your feature request. I believe the exact spawning of players/civilizations is handled within actual map scripts. My tool does not address that issue as that would be a very specific 'map type script - like continents.lua or island_plates.lua' instead of a general use tool to add those scripts/map sizes.

Perhaps as I learn more about how the game works, i'll figure some fancy script generator algorithm but for now I believe it would have to be crafted specifically for your request and unfortunately I do not have plans to create scripts right now.